Pure analytical standards for the major saponins present in processed soy products, the group B saponins (soyasaponins I, II, III and IV), were isolated in mg quantities by a combination of processing, precipitation/re-solubilisation, TLC and preparative HPLC. These standards were determined to be pure by LC-ESI/MS analysis and NMR. The standards were used to perfect a facile analytical HPLC me...

Saponins are sterols or triterpene glycosides that are widely distributed in plants. The biosynthesis of soybean saponins is thought to involve many kinds of glycosyltransferases, which is reflected in their structural diversity. Here, we performed linkage analyses of the Sg-3 and Sg-4 loci, which may control the sugar chain composition at the C-3 sugar moieties of the soybean saponin aglycones...

A relatively simple and short procedure for the quantitative determination of gypsogenin saponins was performed to evaluate homeopathic tinctures in which those compounds can be regarded as one of the active constituents. This method comprises partial hydrolysis of saponins, subsequent extraction of liberated prosaponin (gypsogenin 3-O-glucuronide) and its analysis by high performance liquid ch...

Recent studies of self-assembly in binary systems bio-surfactants, either microbial origin or saponins extracted from plants, are reviewed. Saponins water reported the first section include aescin, glycyrrhizin, and quillaja saponins, while rhamnolipids discussed second on surfactants. Studies surface activities a natural starting point characterization surfactants, but here we focus mainly phy...

Issus coleoptratus is a small plant hopper which mainly feeds on the phloem sap from ivy. Although all parts of ivy are poisonous as the plant contains saponins, especially hederasaponins, I. coleoptratus can cope with the poison. In contrast to other animals like the stick insect Carausius morosus which accumulates saponins in its body, I. coleoptratus can degrade and disintegrate not only the...

Protopanaxatriol saponins obtained with AB-8 macroporous resin mainly consisted of ginsenosides Rg(1) and Re. A novel mono-ester of ginsenoside-Rh(1) (ginsenoside-ORh(1)) was synthesized through further enzymatic hydrolysis and octanoyl chloride modifications. A 53% yield was obtained by a facile synthetic method. The structures were identified on the basis of 1D-NMR and 2D-NMR, as well as ESI-...

Five new triterpene saponins, cussosaponins A (2), B (3), C (4), D (5), and E (6), were isolated from the dried leaves of Cussonia racemosa BAKER. The structures of these new compounds were deduced on the basis of chemical and spectroscopic evidence.

1 Department of Pharmaceutical Botany, Faculty of Pharmacy, “V. Babeș” University of Medicine and Pharmacy, Timișoara 2 Department of Biochemistry, “V. Babeș” University of Medicine and Pharmacy, Timișoara 3 Department of Toxicology, Faculty of Pharmacy, “V. Babeș” University of Medicine and Pharmacy, Timișoara 4 Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “V. Babeș” University...

Sapindus mukorossi is an extremely valuable medicinal plant, distributed in tropical and sub-tropical regions of Asia. The aim of present review is to form a short compilation of the phytochemical composition and pharmacological properties of this multipurpose tree. The main phytoconstituents isolated and identified from different parts of this plant are triterpenoidal saponins of oleanane, dam...

This paper presents an overview of Dr. Mabry’s accomplishments in his career as a natural product chemist, first at the University of Zürich as a post-doctorate and since 1962 as a faculty member at the University of Texas at Austin in the Department of Botany until the late 1990’s when the Biological Sciences programs at UT-Austin were completely reorganized; then until his retirement in 2006,...